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Structure of Volcanoes

The structure of a volcano can show a number of variations:

  • volcanoes built up only of lava flows;
  • volcanoes built up only of pyroclastics;
  • volcanoes built up of alternating layers of lava, volcanic ash and other shattered materials;
  • the nature of the summit - a crater or a caldera.

Geopix Study Topic 'Structure of Volcanoes'
  • gives full-screen images of the volcanoes shown below;
  • describes different types of volcanoes in more detail;
  • illustrates their external and internal features;
  • illustrates some non-volcanic craters;
  • suggests how to answer exam questions on this topic.
The Volcanoes: "The Structure of Volcanoes" Study Topic is part of the Geopix Volcanoes Study Guide CD.
To order this CD go to the Geopix Online Store
Hawaii
Lava layers 		Hawaii
Lava in cliff

Iceland
Rhyolite dome 		Iceland
Cinder cone

Lipari, Sicily
Strato-volcano 		Etna, Sicily
Crater

Iceland
Rootless crater 		Mount St Helens
Mount St Helens

Mauna Kea, Hawaii
Parasitic cones 		Arthur's Seat, Edinburgh
Arthur's Seat

Rotorua, New Zealand
Rotorua 		Meteor Crater, Arizona
Meteor Crater

The Study Topic contains the following pages:

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